UnityEditor.DisplayUtility.GetDisplayIndices C# (CSharp) Method

        public static int[] GetDisplayIndices()
        {
            return s_DisplayIndices;
        }

        private void AllRootCanvases()
        {
            if (PlayerSettings.virtualRealitySupported && (m_RenderMode.enumValueIndex == (int)RenderMode.ScreenSpaceOverlay))
            {
                EditorGUILayout.HelpBox("Using a render mode of ScreenSpaceOverlay while VR is enabled will cause the Canvas to continue to incur a rendering cost, even though the Canvas will not be visible in VR.", MessageType.Warning);
            }

            EditorGUILayout.PropertyField(m_RenderMode);

            m_OverlayMode.target = m_RenderMode.intValue == 0;
            m_CameraMode.target  = m_RenderMode.intValue == 1;
            m_WorldMode.target   = m_RenderMode.intValue == 2;

            EditorGUI.indentLevel++;
            if (EditorGUILayout.BeginFadeGroup(m_OverlayMode.faded))
            {
                EditorGUILayout.PropertyField(m_PixelPerfect);
                EditorGUILayout.PropertyField(m_SortingOrder, Styles.sortingOrder);
                GUIContent[] displayNames = DisplayUtility.GetDisplayNames();
                EditorGUILayout.IntPopup(m_TargetDisplay, displayNames, DisplayUtility.GetDisplayIndices(), Styles.targetDisplay);
            }
            EditorGUILayout.EndFadeGroup();

            if (EditorGUILayout.BeginFadeGroup(m_CameraMode.faded))
            {
                EditorGUILayout.PropertyField(m_PixelPerfect);
                EditorGUILayout.PropertyField(m_Camera, Styles.renderCamera);

                if (m_Camera.objectReferenceValue != null)
                {
                    EditorGUILayout.PropertyField(m_PlaneDistance);
                }

                EditorGUILayout.Space();

                if (m_Camera.objectReferenceValue != null)
                {
                    EditorGUILayout.SortingLayerField(Styles.m_SortingLayerStyle, m_SortingLayerID, EditorStyles.popup, EditorStyles.label);
                }
                EditorGUILayout.PropertyField(m_SortingOrder, Styles.m_SortingOrderStyle);

                if (m_Camera.objectReferenceValue == null)
                {
                    EditorGUILayout.HelpBox("Screen Space - A canvas with no specified camera acts like a Overlay Canvas." +
                                            " Please assign a camera to it in the 'Render Camera' field.", MessageType.Warning);
                }
            }
            EditorGUILayout.EndFadeGroup();

            if (EditorGUILayout.BeginFadeGroup(m_WorldMode.faded))
            {
                EditorGUILayout.PropertyField(m_Camera, Styles.eventCamera);
                EditorGUILayout.Space();
                EditorGUILayout.SortingLayerField(Styles.m_SortingLayerStyle, m_SortingLayerID, EditorStyles.popup);
                EditorGUILayout.PropertyField(m_SortingOrder, Styles.m_SortingOrderStyle);
            }
            EditorGUILayout.EndFadeGroup();
            EditorGUI.indentLevel--;
        }